Inter-Network magnetic fields observed during the minimum of the solar cycle

Details Inter-Network magnetic fields observed during the minimum of the solar cycle Inter-Network magnetic fields observed during the minimum of the solar cycle

2003-10-06

arxiv.org/abs/astro-ph/0310164v1

Astron.Astrophys. 411 (2003) 615-622

Astronomy and Astrophysics

Astrophysics

Accepted for publication in A&A. 7 Pages . 6 Figures

Scientific paper

10.1051/0004-6361:20031560

We analyze a time series of high angular resolution magnetograms of quiet Sun Inter-Network (IN) magnetic fields. These magnetograms have a spatial resolution better than 0.5 arcsec, a noise of some 20 G, and they have been obtained at the disk center during the minimum of the solar cycle. The IN regions show a typical unsigned flux density of the order of 15 G. Signals occur, preferentially, in the intergranular lanes, and the strongest signals trace a network with a scale similar to the mesogranulation. All these features are consistent with the IN magnetograms by Dominguez Cernena et al., obtained during the maximum of the solar cycle. Consequently, the unsigned magnetic flux of the structures that give rise to the IN polarization signals does not seem to undergo large variations during the solar cycle.

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